Commit f6f76920 authored by Philip Reames's avatar Philip Reames Committed by Philip Reames
Browse files

[tests] Autogenerate a couple of tests 

As usual, making it easier for an upcoming test delta to be seen.

Note that several of these are examples of extremely bad testing practice.
Checking internal debug output (for no real purpose), and checking the
result of a fully O2 + llc run instead of reducing the specific problematic
pass.
parent 51018d1a

llvm/test/CodeGen/BPF/loop-exit-cond.ll

+25 −5
Original line number Diff line number Diff line 
; RUN: opt -O2 -S -o %t1 < %s

; RUN: llc -march=bpf -mcpu=v3 %t1 -o - | FileCheck %s

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 3

; RUN: opt -O2 -S < %s | FileCheck %s

;

; Source code:

;   typedef unsigned long u64;
@@ -26,6 +26,29 @@ target triple = "bpf" 


; Function Attrs: nounwind

define dso_local i32 @test(i32 %len, ptr %data) #0 {

; CHECK-LABEL: define dso_local i32 @test(

; CHECK-SAME: i32 [[LEN:%.*]], ptr nocapture readonly [[DATA:%.*]]) local_unnamed_addr #[[ATTR0:[0-9]+]] {

; CHECK-NEXT:  entry:

; CHECK-NEXT:    [[D:%.*]] = alloca [1 x i64], align 8

; CHECK-NEXT:    [[TMP0:%.*]] = add i32 [[LEN]], -2

; CHECK-NEXT:    [[OR_COND:%.*]] = icmp ult i32 [[TMP0]], 98

; CHECK-NEXT:    br i1 [[OR_COND]], label [[FOR_BODY:%.*]], label [[IF_END:%.*]]

; CHECK:       for.body:

; CHECK-NEXT:    [[I_05:%.*]] = phi i32 [ [[INC:%.*]], [[FOR_BODY]] ], [ 1, [[ENTRY:%.*]] ]

; CHECK-NEXT:    call void @llvm.lifetime.start.p0(i64 8, ptr nonnull [[D]]) #[[ATTR3:[0-9]+]]

; CHECK-NEXT:    [[TMP1:%.*]] = load i8, ptr [[DATA]], align 1, !tbaa [[TBAA3:![0-9]+]]

; CHECK-NEXT:    [[TOBOOL_NOT:%.*]] = icmp eq i8 [[TMP1]], 0

; CHECK-NEXT:    [[NARROW:%.*]] = select i1 [[TOBOOL_NOT]], i8 48, i8 [[TMP1]]

; CHECK-NEXT:    [[CONV2:%.*]] = sext i8 [[NARROW]] to i64

; CHECK-NEXT:    store i64 [[CONV2]], ptr [[D]], align 8, !tbaa [[TBAA6:![0-9]+]]

; CHECK-NEXT:    call void @foo(ptr nonnull @.str, i32 [[I_05]], ptr nonnull [[D]]) #[[ATTR3]]

; CHECK-NEXT:    call void @llvm.lifetime.end.p0(i64 8, ptr nonnull [[D]]) #[[ATTR3]]

; CHECK-NEXT:    [[INC]] = add nuw nsw i32 [[I_05]], 1

; CHECK-NEXT:    [[CMP1:%.*]] = icmp slt i32 [[INC]], [[LEN]]

; CHECK-NEXT:    br i1 [[CMP1]], label [[FOR_BODY]], label [[IF_END]], !llvm.loop [[LOOP8:![0-9]+]]

; CHECK:       if.end:

; CHECK-NEXT:    ret i32 0

;

entry:

  %len.addr = alloca i32, align 4

  %data.addr = alloca ptr, align 8
@@ -48,9 +71,6 @@ for.cond: ; preds = %for.inc, %if.then 
  %cmp1 = icmp slt i32 %1, %2

  br i1 %cmp1, label %for.body, label %for.cond.cleanup



; CHECK:      w[[LEN:[0-9]+]] = w1

; CHECK:      w[[IDX:[0-9]+]] += 1

; CHECK-NEXT: w[[IDX]] s< w[[LEN]] goto



for.cond.cleanup:                                 ; preds = %for.cond

  call void @llvm.lifetime.end.p0(i64 4, ptr %i) #3

llvm/test/Transforms/HardwareLoops/ARM/fp-emulation.ll

+237 −58
Original line number Diff line number Diff line 
; RUN: opt -mtriple=thumbv8.1m.main-none-none-eabi -mattr=+fp-armv8 -passes=hardware-loops %s -S -o - | FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-FP

; RUN: opt -mtriple=thumbv8.1m.main-none-none-eabi -mattr=+soft-float -passes=hardware-loops %s -S -o - | FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-SOFT



; CHECK-LABEL: test_fptosi

; CHECK-SOFT-NOT: call i32 @llvm.start.loop.iterations



; CHECK: entry:

; CHECK-FP: [[COUNT:%[^ ]+]] = call i32 @llvm.umax.i32(i32 %n, i32 1)



; CHECK: while.body.lr.ph:

; CHECK-FP: [[START:%[^ ]+]] = call i32 @llvm.start.loop.iterations.i32(i32 [[COUNT]])

; CHECK-FP-NEXT: br label %while.body



; CHECK-FP: [[REM:%[^ ]+]] = phi i32 [ [[START]], %while.body.lr.ph ], [ [[LOOP_DEC:%[^ ]+]], %if.end4 ]

; CHECK-FP: [[LOOP_DEC]] = call i32 @llvm.loop.decrement.reg.i32(i32 [[REM]], i32 1)

; CHECK-FP: [[CMP:%[^ ]+]] = icmp ne i32 [[LOOP_DEC]], 0

; CHECK-FP: br i1 [[CMP]], label %while.body, label %cleanup.loopexit

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 3

; RUN: opt -mtriple=thumbv8.1m.main-none-none-eabi -mattr=+fp-armv8 -passes=hardware-loops %s -S -o - | FileCheck %s --check-prefixes=CHECK,CHECK-FP

; RUN: opt -mtriple=thumbv8.1m.main-none-none-eabi -mattr=+soft-float -passes=hardware-loops %s -S -o - | FileCheck %s --check-prefixes=CHECK,CHECK-SOFT



define void @test_fptosi(i32 %n, ptr %g, ptr %d) {

; CHECK-FP-LABEL: define void @test_fptosi(

; CHECK-FP-SAME: i32 [[N:%.*]], ptr [[G:%.*]], ptr [[D:%.*]]) #[[ATTR0:[0-9]+]] {

; CHECK-FP-NEXT:  entry:

; CHECK-FP-NEXT:    [[N_OFF:%.*]] = add i32 [[N]], -1

; CHECK-FP-NEXT:    [[TMP0:%.*]] = icmp ult i32 [[N_OFF]], 500

; CHECK-FP-NEXT:    [[UMAX:%.*]] = call i32 @llvm.umax.i32(i32 [[N]], i32 1)

; CHECK-FP-NEXT:    br i1 [[TMP0]], label [[WHILE_BODY_LR_PH:%.*]], label [[CLEANUP:%.*]]

; CHECK-FP:       while.body.lr.ph:

; CHECK-FP-NEXT:    [[TMP1:%.*]] = load ptr, ptr [[D]], align 4

; CHECK-FP-NEXT:    [[TMP2:%.*]] = load ptr, ptr [[G]], align 4

; CHECK-FP-NEXT:    [[TMP3:%.*]] = call i32 @llvm.start.loop.iterations.i32(i32 [[UMAX]])

; CHECK-FP-NEXT:    br label [[WHILE_BODY:%.*]]

; CHECK-FP:       while.body:

; CHECK-FP-NEXT:    [[I_012:%.*]] = phi i32 [ 0, [[WHILE_BODY_LR_PH]] ], [ [[INC:%.*]], [[IF_END4:%.*]] ]

; CHECK-FP-NEXT:    [[TMP4:%.*]] = phi i32 [ [[TMP3]], [[WHILE_BODY_LR_PH]] ], [ [[TMP6:%.*]], [[IF_END4]] ]

; CHECK-FP-NEXT:    [[REM:%.*]] = urem i32 [[I_012]], 10

; CHECK-FP-NEXT:    [[TOBOOL:%.*]] = icmp eq i32 [[REM]], 0

; CHECK-FP-NEXT:    br i1 [[TOBOOL]], label [[IF_END4]], label [[IF_THEN2:%.*]]

; CHECK-FP:       if.then2:

; CHECK-FP-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds double, ptr [[TMP1]], i32 [[I_012]]

; CHECK-FP-NEXT:    [[TMP5:%.*]] = load double, ptr [[ARRAYIDX]], align 8

; CHECK-FP-NEXT:    [[CONV:%.*]] = fptosi double [[TMP5]] to i32

; CHECK-FP-NEXT:    [[ARRAYIDX3:%.*]] = getelementptr inbounds i32, ptr [[TMP2]], i32 [[I_012]]

; CHECK-FP-NEXT:    store i32 [[CONV]], ptr [[ARRAYIDX3]], align 4

; CHECK-FP-NEXT:    br label [[IF_END4]]

; CHECK-FP:       if.end4:

; CHECK-FP-NEXT:    [[INC]] = add nuw i32 [[I_012]], 1

; CHECK-FP-NEXT:    [[TMP6]] = call i32 @llvm.loop.decrement.reg.i32(i32 [[TMP4]], i32 1)

; CHECK-FP-NEXT:    [[TMP7:%.*]] = icmp ne i32 [[TMP6]], 0

; CHECK-FP-NEXT:    br i1 [[TMP7]], label [[WHILE_BODY]], label [[CLEANUP_LOOPEXIT:%.*]]

; CHECK-FP:       cleanup.loopexit:

; CHECK-FP-NEXT:    br label [[CLEANUP]]

; CHECK-FP:       cleanup:

; CHECK-FP-NEXT:    ret void

;

; CHECK-SOFT-LABEL: define void @test_fptosi(

; CHECK-SOFT-SAME: i32 [[N:%.*]], ptr [[G:%.*]], ptr [[D:%.*]]) #[[ATTR0:[0-9]+]] {

; CHECK-SOFT-NEXT:  entry:

; CHECK-SOFT-NEXT:    [[N_OFF:%.*]] = add i32 [[N]], -1

; CHECK-SOFT-NEXT:    [[TMP0:%.*]] = icmp ult i32 [[N_OFF]], 500

; CHECK-SOFT-NEXT:    br i1 [[TMP0]], label [[WHILE_BODY_LR_PH:%.*]], label [[CLEANUP:%.*]]

; CHECK-SOFT:       while.body.lr.ph:

; CHECK-SOFT-NEXT:    [[TMP1:%.*]] = load ptr, ptr [[D]], align 4

; CHECK-SOFT-NEXT:    [[TMP2:%.*]] = load ptr, ptr [[G]], align 4

; CHECK-SOFT-NEXT:    br label [[WHILE_BODY:%.*]]

; CHECK-SOFT:       while.body:

; CHECK-SOFT-NEXT:    [[I_012:%.*]] = phi i32 [ 0, [[WHILE_BODY_LR_PH]] ], [ [[INC:%.*]], [[IF_END4:%.*]] ]

; CHECK-SOFT-NEXT:    [[REM:%.*]] = urem i32 [[I_012]], 10

; CHECK-SOFT-NEXT:    [[TOBOOL:%.*]] = icmp eq i32 [[REM]], 0

; CHECK-SOFT-NEXT:    br i1 [[TOBOOL]], label [[IF_END4]], label [[IF_THEN2:%.*]]

; CHECK-SOFT:       if.then2:

; CHECK-SOFT-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds double, ptr [[TMP1]], i32 [[I_012]]

; CHECK-SOFT-NEXT:    [[TMP3:%.*]] = load double, ptr [[ARRAYIDX]], align 8

; CHECK-SOFT-NEXT:    [[CONV:%.*]] = fptosi double [[TMP3]] to i32

; CHECK-SOFT-NEXT:    [[ARRAYIDX3:%.*]] = getelementptr inbounds i32, ptr [[TMP2]], i32 [[I_012]]

; CHECK-SOFT-NEXT:    store i32 [[CONV]], ptr [[ARRAYIDX3]], align 4

; CHECK-SOFT-NEXT:    br label [[IF_END4]]

; CHECK-SOFT:       if.end4:

; CHECK-SOFT-NEXT:    [[INC]] = add nuw i32 [[I_012]], 1

; CHECK-SOFT-NEXT:    [[CMP1:%.*]] = icmp ult i32 [[INC]], [[N]]

; CHECK-SOFT-NEXT:    br i1 [[CMP1]], label [[WHILE_BODY]], label [[CLEANUP_LOOPEXIT:%.*]]

; CHECK-SOFT:       cleanup.loopexit:

; CHECK-SOFT-NEXT:    br label [[CLEANUP]]

; CHECK-SOFT:       cleanup:

; CHECK-SOFT-NEXT:    ret void

;

entry:

  %n.off = add i32 %n, -1

  %0 = icmp ult i32 %n.off, 500
@@ -53,21 +105,73 @@ cleanup: 
  ret void

}



; CHECK-LABEL: test_fptoui

; CHECK: entry:

; CHECK-FP: [[COUNT:%[^ ]+]] = call i32 @llvm.umax.i32(i32 %n, i32 1)

; CHECK-FP: while.body.lr.ph:

; CHECK-FP: [[START:%[^ ]+]] = call i32 @llvm.start.loop.iterations.i32(i32 [[COUNT]])

; CHECK-FP-NEXT: br label %while.body



; CHECK-FP: [[REM:%[^ ]+]] = phi i32 [ [[START]], %while.body.lr.ph ], [ [[LOOP_DEC:%[^ ]+]], %if.end4 ]

; CHECK-FP: [[LOOP_DEC]] = call i32 @llvm.loop.decrement.reg.i32(i32 [[REM]], i32 1)

; CHECK-FP: [[CMP:%[^ ]+]] = icmp ne i32 [[LOOP_DEC]], 0

; CHECK-FP: br i1 [[CMP]], label %while.body, label %cleanup.loopexit



; CHECK-SOFT-NOT: call i32 @llvm.start.loop.iterations



define void @test_fptoui(i32 %n, ptr %g, ptr %d) {

; CHECK-FP-LABEL: define void @test_fptoui(

; CHECK-FP-SAME: i32 [[N:%.*]], ptr [[G:%.*]], ptr [[D:%.*]]) #[[ATTR0]] {

; CHECK-FP-NEXT:  entry:

; CHECK-FP-NEXT:    [[N_OFF:%.*]] = add i32 [[N]], -1

; CHECK-FP-NEXT:    [[TMP0:%.*]] = icmp ult i32 [[N_OFF]], 500

; CHECK-FP-NEXT:    [[UMAX:%.*]] = call i32 @llvm.umax.i32(i32 [[N]], i32 1)

; CHECK-FP-NEXT:    br i1 [[TMP0]], label [[WHILE_BODY_LR_PH:%.*]], label [[CLEANUP:%.*]]

; CHECK-FP:       while.body.lr.ph:

; CHECK-FP-NEXT:    [[TMP1:%.*]] = load ptr, ptr [[D]], align 4

; CHECK-FP-NEXT:    [[TMP2:%.*]] = load ptr, ptr [[G]], align 4

; CHECK-FP-NEXT:    [[TMP3:%.*]] = call i32 @llvm.start.loop.iterations.i32(i32 [[UMAX]])

; CHECK-FP-NEXT:    br label [[WHILE_BODY:%.*]]

; CHECK-FP:       while.body:

; CHECK-FP-NEXT:    [[I_012:%.*]] = phi i32 [ 0, [[WHILE_BODY_LR_PH]] ], [ [[INC:%.*]], [[IF_END4:%.*]] ]

; CHECK-FP-NEXT:    [[TMP4:%.*]] = phi i32 [ [[TMP3]], [[WHILE_BODY_LR_PH]] ], [ [[TMP6:%.*]], [[IF_END4]] ]

; CHECK-FP-NEXT:    [[REM:%.*]] = urem i32 [[I_012]], 10

; CHECK-FP-NEXT:    [[TOBOOL:%.*]] = icmp eq i32 [[REM]], 0

; CHECK-FP-NEXT:    br i1 [[TOBOOL]], label [[IF_END4]], label [[IF_THEN2:%.*]]

; CHECK-FP:       if.then2:

; CHECK-FP-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds double, ptr [[TMP1]], i32 [[I_012]]

; CHECK-FP-NEXT:    [[TMP5:%.*]] = load double, ptr [[ARRAYIDX]], align 8

; CHECK-FP-NEXT:    [[CONV:%.*]] = fptoui double [[TMP5]] to i32

; CHECK-FP-NEXT:    [[ARRAYIDX3:%.*]] = getelementptr inbounds i32, ptr [[TMP2]], i32 [[I_012]]

; CHECK-FP-NEXT:    store i32 [[CONV]], ptr [[ARRAYIDX3]], align 4

; CHECK-FP-NEXT:    br label [[IF_END4]]

; CHECK-FP:       if.end4:

; CHECK-FP-NEXT:    [[INC]] = add nuw i32 [[I_012]], 1

; CHECK-FP-NEXT:    [[TMP6]] = call i32 @llvm.loop.decrement.reg.i32(i32 [[TMP4]], i32 1)

; CHECK-FP-NEXT:    [[TMP7:%.*]] = icmp ne i32 [[TMP6]], 0

; CHECK-FP-NEXT:    br i1 [[TMP7]], label [[WHILE_BODY]], label [[CLEANUP_LOOPEXIT:%.*]]

; CHECK-FP:       cleanup.loopexit:

; CHECK-FP-NEXT:    br label [[CLEANUP]]

; CHECK-FP:       cleanup:

; CHECK-FP-NEXT:    ret void

;

; CHECK-SOFT-LABEL: define void @test_fptoui(

; CHECK-SOFT-SAME: i32 [[N:%.*]], ptr [[G:%.*]], ptr [[D:%.*]]) #[[ATTR0]] {

; CHECK-SOFT-NEXT:  entry:

; CHECK-SOFT-NEXT:    [[N_OFF:%.*]] = add i32 [[N]], -1

; CHECK-SOFT-NEXT:    [[TMP0:%.*]] = icmp ult i32 [[N_OFF]], 500

; CHECK-SOFT-NEXT:    br i1 [[TMP0]], label [[WHILE_BODY_LR_PH:%.*]], label [[CLEANUP:%.*]]

; CHECK-SOFT:       while.body.lr.ph:

; CHECK-SOFT-NEXT:    [[TMP1:%.*]] = load ptr, ptr [[D]], align 4

; CHECK-SOFT-NEXT:    [[TMP2:%.*]] = load ptr, ptr [[G]], align 4

; CHECK-SOFT-NEXT:    br label [[WHILE_BODY:%.*]]

; CHECK-SOFT:       while.body:

; CHECK-SOFT-NEXT:    [[I_012:%.*]] = phi i32 [ 0, [[WHILE_BODY_LR_PH]] ], [ [[INC:%.*]], [[IF_END4:%.*]] ]

; CHECK-SOFT-NEXT:    [[REM:%.*]] = urem i32 [[I_012]], 10

; CHECK-SOFT-NEXT:    [[TOBOOL:%.*]] = icmp eq i32 [[REM]], 0

; CHECK-SOFT-NEXT:    br i1 [[TOBOOL]], label [[IF_END4]], label [[IF_THEN2:%.*]]

; CHECK-SOFT:       if.then2:

; CHECK-SOFT-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds double, ptr [[TMP1]], i32 [[I_012]]

; CHECK-SOFT-NEXT:    [[TMP3:%.*]] = load double, ptr [[ARRAYIDX]], align 8

; CHECK-SOFT-NEXT:    [[CONV:%.*]] = fptoui double [[TMP3]] to i32

; CHECK-SOFT-NEXT:    [[ARRAYIDX3:%.*]] = getelementptr inbounds i32, ptr [[TMP2]], i32 [[I_012]]

; CHECK-SOFT-NEXT:    store i32 [[CONV]], ptr [[ARRAYIDX3]], align 4

; CHECK-SOFT-NEXT:    br label [[IF_END4]]

; CHECK-SOFT:       if.end4:

; CHECK-SOFT-NEXT:    [[INC]] = add nuw i32 [[I_012]], 1

; CHECK-SOFT-NEXT:    [[CMP1:%.*]] = icmp ult i32 [[INC]], [[N]]

; CHECK-SOFT-NEXT:    br i1 [[CMP1]], label [[WHILE_BODY]], label [[CLEANUP_LOOPEXIT:%.*]]

; CHECK-SOFT:       cleanup.loopexit:

; CHECK-SOFT-NEXT:    br label [[CLEANUP]]

; CHECK-SOFT:       cleanup:

; CHECK-SOFT-NEXT:    ret void

;

entry:

  %n.off = add i32 %n, -1

  %0 = icmp ult i32 %n.off, 500
@@ -104,19 +208,41 @@ cleanup: 
  ret void

}



; CHECK-LABEL: load_store_float

; CHECK: entry:

; CHECK:   [[COUNT:%[^ ]+]] = call i32 @llvm.umax.i32(i32 %n, i32 1)

; CHECK: while.body.lr.ph:

; CHECK:   [[START:%[^ ]+]] = call i32 @llvm.start.loop.iterations.i32(i32 [[COUNT]])

; CHECK-NEXT: br label %while.body



; CHECK: [[REM:%[^ ]+]] = phi i32 [ [[START]], %while.body.lr.ph ], [ [[LOOP_DEC:%[^ ]+]], %if.end4 ]

; CHECK: [[LOOP_DEC]] = call i32 @llvm.loop.decrement.reg.i32(i32 [[REM]], i32 1)

; CHECK: [[CMP:%[^ ]+]] = icmp ne i32 [[LOOP_DEC]], 0

; CHECK: br i1 [[CMP]], label %while.body, label %cleanup.loopexit



define void @load_store_float(i32 %n, ptr %d, ptr %g) {

; CHECK-LABEL: define void @load_store_float(

; CHECK-SAME: i32 [[N:%.*]], ptr [[D:%.*]], ptr [[G:%.*]]) #[[ATTR0:[0-9]+]] {

; CHECK-NEXT:  entry:

; CHECK-NEXT:    [[N_OFF:%.*]] = add i32 [[N]], -1

; CHECK-NEXT:    [[TMP0:%.*]] = icmp ult i32 [[N_OFF]], 500

; CHECK-NEXT:    [[UMAX:%.*]] = call i32 @llvm.umax.i32(i32 [[N]], i32 1)

; CHECK-NEXT:    br i1 [[TMP0]], label [[WHILE_BODY_LR_PH:%.*]], label [[CLEANUP:%.*]]

; CHECK:       while.body.lr.ph:

; CHECK-NEXT:    [[TMP1:%.*]] = load ptr, ptr [[D]], align 4

; CHECK-NEXT:    [[TMP2:%.*]] = load ptr, ptr [[G]], align 4

; CHECK-NEXT:    [[TMP3:%.*]] = call i32 @llvm.start.loop.iterations.i32(i32 [[UMAX]])

; CHECK-NEXT:    br label [[WHILE_BODY:%.*]]

; CHECK:       while.body:

; CHECK-NEXT:    [[I_012:%.*]] = phi i32 [ 0, [[WHILE_BODY_LR_PH]] ], [ [[INC:%.*]], [[IF_END4:%.*]] ]

; CHECK-NEXT:    [[TMP4:%.*]] = phi i32 [ [[TMP3]], [[WHILE_BODY_LR_PH]] ], [ [[TMP6:%.*]], [[IF_END4]] ]

; CHECK-NEXT:    [[REM:%.*]] = urem i32 [[I_012]], 10

; CHECK-NEXT:    [[TOBOOL:%.*]] = icmp eq i32 [[REM]], 0

; CHECK-NEXT:    br i1 [[TOBOOL]], label [[IF_END4]], label [[IF_THEN2:%.*]]

; CHECK:       if.then2:

; CHECK-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds double, ptr [[TMP1]], i32 [[I_012]]

; CHECK-NEXT:    [[TMP5:%.*]] = load double, ptr [[ARRAYIDX]], align 8

; CHECK-NEXT:    [[ARRAYIDX3:%.*]] = getelementptr inbounds double, ptr [[TMP2]], i32 [[I_012]]

; CHECK-NEXT:    store double [[TMP5]], ptr [[ARRAYIDX3]], align 8

; CHECK-NEXT:    br label [[IF_END4]]

; CHECK:       if.end4:

; CHECK-NEXT:    [[INC]] = add nuw i32 [[I_012]], 1

; CHECK-NEXT:    [[TMP6]] = call i32 @llvm.loop.decrement.reg.i32(i32 [[TMP4]], i32 1)

; CHECK-NEXT:    [[TMP7:%.*]] = icmp ne i32 [[TMP6]], 0

; CHECK-NEXT:    br i1 [[TMP7]], label [[WHILE_BODY]], label [[CLEANUP_LOOPEXIT:%.*]]

; CHECK:       cleanup.loopexit:

; CHECK-NEXT:    br label [[CLEANUP]]

; CHECK:       cleanup:

; CHECK-NEXT:    ret void

;

entry:

  %n.off = add i32 %n, -1

  %0 = icmp ult i32 %n.off, 500
@@ -152,22 +278,75 @@ cleanup: 
  ret void

}



; CHECK-LABEL: fp_add

; CHECK-SOFT-NOT: call i32 @llvm.start.loop.iterations

; CHECK: entry:

; CHECK-FP: [[COUNT:%[^ ]+]] = call i32 @llvm.umax.i32(i32 %n, i32 1)

; CHECK: while.body.lr.ph:

; CHECK-FP: [[START:%[^ ]+]] = call i32 @llvm.start.loop.iterations.i32(i32 [[COUNT]])

; CHECK: br label %while.body



; CHECK-SOFT-NOT: call i32 @llvm.loop.decrement



; CHECK-FP: [[REM:%[^ ]+]] = phi i32 [ [[START]], %while.body.lr.ph ], [ [[LOOP_DEC:%[^ ]+]], %if.end4 ]

; CHECK-FP: [[LOOP_DEC]] = call i32 @llvm.loop.decrement.reg.i32(i32 [[REM]], i32 1)

; CHECK-FP: [[CMP:%[^ ]+]] = icmp ne i32 [[LOOP_DEC]], 0

; CHECK-FP: br i1 [[CMP]], label %while.body, label %cleanup.loopexit



define void @fp_add(i32 %n, ptr %d, ptr %g) {

; CHECK-FP-LABEL: define void @fp_add(

; CHECK-FP-SAME: i32 [[N:%.*]], ptr [[D:%.*]], ptr [[G:%.*]]) #[[ATTR0]] {

; CHECK-FP-NEXT:  entry:

; CHECK-FP-NEXT:    [[N_OFF:%.*]] = add i32 [[N]], -1

; CHECK-FP-NEXT:    [[TMP0:%.*]] = icmp ult i32 [[N_OFF]], 500

; CHECK-FP-NEXT:    [[UMAX:%.*]] = call i32 @llvm.umax.i32(i32 [[N]], i32 1)

; CHECK-FP-NEXT:    br i1 [[TMP0]], label [[WHILE_BODY_LR_PH:%.*]], label [[CLEANUP:%.*]]

; CHECK-FP:       while.body.lr.ph:

; CHECK-FP-NEXT:    [[TMP1:%.*]] = load ptr, ptr [[D]], align 4

; CHECK-FP-NEXT:    [[TMP2:%.*]] = load ptr, ptr [[G]], align 4

; CHECK-FP-NEXT:    [[TMP3:%.*]] = call i32 @llvm.start.loop.iterations.i32(i32 [[UMAX]])

; CHECK-FP-NEXT:    br label [[WHILE_BODY:%.*]]

; CHECK-FP:       while.body:

; CHECK-FP-NEXT:    [[I_012:%.*]] = phi i32 [ 0, [[WHILE_BODY_LR_PH]] ], [ [[INC:%.*]], [[IF_END4:%.*]] ]

; CHECK-FP-NEXT:    [[TMP4:%.*]] = phi i32 [ [[TMP3]], [[WHILE_BODY_LR_PH]] ], [ [[TMP7:%.*]], [[IF_END4]] ]

; CHECK-FP-NEXT:    [[REM:%.*]] = urem i32 [[I_012]], 10

; CHECK-FP-NEXT:    [[TOBOOL:%.*]] = icmp eq i32 [[REM]], 0

; CHECK-FP-NEXT:    br i1 [[TOBOOL]], label [[IF_END4]], label [[IF_THEN2:%.*]]

; CHECK-FP:       if.then2:

; CHECK-FP-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds float, ptr [[TMP1]], i32 [[I_012]]

; CHECK-FP-NEXT:    [[TMP5:%.*]] = load float, ptr [[ARRAYIDX]], align 4

; CHECK-FP-NEXT:    [[ARRAYIDX3:%.*]] = getelementptr inbounds float, ptr [[TMP2]], i32 [[I_012]]

; CHECK-FP-NEXT:    [[TMP6:%.*]] = load float, ptr [[ARRAYIDX3]], align 4

; CHECK-FP-NEXT:    [[ADD:%.*]] = fadd float [[TMP5]], [[TMP6]]

; CHECK-FP-NEXT:    store float [[ADD]], ptr [[ARRAYIDX3]], align 4

; CHECK-FP-NEXT:    br label [[IF_END4]]

; CHECK-FP:       if.end4:

; CHECK-FP-NEXT:    [[INC]] = add nuw i32 [[I_012]], 1

; CHECK-FP-NEXT:    [[TMP7]] = call i32 @llvm.loop.decrement.reg.i32(i32 [[TMP4]], i32 1)

; CHECK-FP-NEXT:    [[TMP8:%.*]] = icmp ne i32 [[TMP7]], 0

; CHECK-FP-NEXT:    br i1 [[TMP8]], label [[WHILE_BODY]], label [[CLEANUP_LOOPEXIT:%.*]]

; CHECK-FP:       cleanup.loopexit:

; CHECK-FP-NEXT:    br label [[CLEANUP]]

; CHECK-FP:       cleanup:

; CHECK-FP-NEXT:    ret void

;

; CHECK-SOFT-LABEL: define void @fp_add(

; CHECK-SOFT-SAME: i32 [[N:%.*]], ptr [[D:%.*]], ptr [[G:%.*]]) #[[ATTR0]] {

; CHECK-SOFT-NEXT:  entry:

; CHECK-SOFT-NEXT:    [[N_OFF:%.*]] = add i32 [[N]], -1

; CHECK-SOFT-NEXT:    [[TMP0:%.*]] = icmp ult i32 [[N_OFF]], 500

; CHECK-SOFT-NEXT:    br i1 [[TMP0]], label [[WHILE_BODY_LR_PH:%.*]], label [[CLEANUP:%.*]]

; CHECK-SOFT:       while.body.lr.ph:

; CHECK-SOFT-NEXT:    [[TMP1:%.*]] = load ptr, ptr [[D]], align 4

; CHECK-SOFT-NEXT:    [[TMP2:%.*]] = load ptr, ptr [[G]], align 4

; CHECK-SOFT-NEXT:    br label [[WHILE_BODY:%.*]]

; CHECK-SOFT:       while.body:

; CHECK-SOFT-NEXT:    [[I_012:%.*]] = phi i32 [ 0, [[WHILE_BODY_LR_PH]] ], [ [[INC:%.*]], [[IF_END4:%.*]] ]

; CHECK-SOFT-NEXT:    [[REM:%.*]] = urem i32 [[I_012]], 10

; CHECK-SOFT-NEXT:    [[TOBOOL:%.*]] = icmp eq i32 [[REM]], 0

; CHECK-SOFT-NEXT:    br i1 [[TOBOOL]], label [[IF_END4]], label [[IF_THEN2:%.*]]

; CHECK-SOFT:       if.then2:

; CHECK-SOFT-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds float, ptr [[TMP1]], i32 [[I_012]]

; CHECK-SOFT-NEXT:    [[TMP3:%.*]] = load float, ptr [[ARRAYIDX]], align 4

; CHECK-SOFT-NEXT:    [[ARRAYIDX3:%.*]] = getelementptr inbounds float, ptr [[TMP2]], i32 [[I_012]]

; CHECK-SOFT-NEXT:    [[TMP4:%.*]] = load float, ptr [[ARRAYIDX3]], align 4

; CHECK-SOFT-NEXT:    [[ADD:%.*]] = fadd float [[TMP3]], [[TMP4]]

; CHECK-SOFT-NEXT:    store float [[ADD]], ptr [[ARRAYIDX3]], align 4

; CHECK-SOFT-NEXT:    br label [[IF_END4]]

; CHECK-SOFT:       if.end4:

; CHECK-SOFT-NEXT:    [[INC]] = add nuw i32 [[I_012]], 1

; CHECK-SOFT-NEXT:    [[CMP1:%.*]] = icmp ult i32 [[INC]], [[N]]

; CHECK-SOFT-NEXT:    br i1 [[CMP1]], label [[WHILE_BODY]], label [[CLEANUP_LOOPEXIT:%.*]]

; CHECK-SOFT:       cleanup.loopexit:

; CHECK-SOFT-NEXT:    br label [[CLEANUP]]

; CHECK-SOFT:       cleanup:

; CHECK-SOFT-NEXT:    ret void

;

entry:

  %n.off = add i32 %n, -1

  %0 = icmp ult i32 %n.off, 500

llvm/test/Transforms/IRCE/variable-loop-bounds.ll

+737 −53

File changed.

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