2927716277
Summary: `ConstantRange::makeGuaranteedNoWrapRegion()` knows how to deal with `mul` since rL335646, there is exhaustive test coverage. This is already used by CVP's `processOverflowIntrinsic()`, and by SCEV's `StrengthenNoWrapFlags()` That being said, currently, this doesn't help much in the end: | statistic | old | new | delta | percentage | | correlated-value-propagation.NumMulNSW | 4 | 275 | 271 | 6775.00% | | correlated-value-propagation.NumMulNUW | 4 | 1323 | 1319 | 32975.00% | | correlated-value-propagation.NumMulNW | 8 | 1598 | 1590 | 19875.00% | | correlated-value-propagation.NumNSW | 5715 | 5986 | 271 | 4.74% | | correlated-value-propagation.NumNUW | 9193 | 10512 | 1319 | 14.35% | | correlated-value-propagation.NumNW | 14908 | 16498 | 1590 | 10.67% | | instcount.NumAddInst | 275871 | 275869 | -2 | 0.00% | | instcount.NumBrInst | 708234 | 708232 | -2 | 0.00% | | instcount.NumMulInst | 43812 | 43810 | -2 | 0.00% | | instcount.NumPHIInst | 316786 | 316784 | -2 | 0.00% | | instcount.NumTruncInst | 62165 | 62167 | 2 | 0.00% | | instcount.NumUDivInst | 2528 | 2526 | -2 | -0.08% | | instcount.TotalBlocks | 842995 | 842993 | -2 | 0.00% | | instcount.TotalInsts | 7376486 | 7376478 | -8 | 0.00% | (^ test-suite plain, tests still pass) Reviewers: nikic, reames, luqmana, sanjoy, timshen Reviewed By: reames Subscribers: hiraditya, javed.absar, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D69203 llvm-svn: 375396
176 lines
4.0 KiB
LLVM
176 lines
4.0 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -correlated-propagation -cvp-dont-add-nowrap-flags=false -S | FileCheck %s
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define i8 @test0(i8 %a) {
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; CHECK-LABEL: @test0(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[CMP:%.*]] = icmp ult i8 [[A:%.*]], 3
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; CHECK-NEXT: br i1 [[CMP]], label [[BB:%.*]], label [[EXIT:%.*]]
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; CHECK: bb:
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; CHECK-NEXT: [[MUL:%.*]] = mul nuw nsw i8 [[A]], 50
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; CHECK-NEXT: ret i8 [[MUL]]
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; CHECK: exit:
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; CHECK-NEXT: ret i8 0
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;
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entry:
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%cmp = icmp ult i8 %a, 3
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br i1 %cmp, label %bb, label %exit
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bb:
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%mul = mul i8 %a, 50
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ret i8 %mul
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exit:
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ret i8 0
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}
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define i8 @test1(i8 %a) {
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; CHECK-LABEL: @test1(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[CMP:%.*]] = icmp ult i8 [[A:%.*]], 4
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; CHECK-NEXT: br i1 [[CMP]], label [[BB:%.*]], label [[EXIT:%.*]]
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; CHECK: bb:
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; CHECK-NEXT: [[MUL:%.*]] = mul nuw i8 [[A]], 50
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; CHECK-NEXT: ret i8 [[MUL]]
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; CHECK: exit:
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; CHECK-NEXT: ret i8 0
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;
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entry:
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%cmp = icmp ult i8 %a, 4
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br i1 %cmp, label %bb, label %exit
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bb:
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%mul = mul i8 %a, 50
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ret i8 %mul
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exit:
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ret i8 0
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}
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define i8 @test2(i8 %a) {
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; CHECK-LABEL: @test2(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[CMP:%.*]] = icmp ult i8 [[A:%.*]], 6
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; CHECK-NEXT: br i1 [[CMP]], label [[BB:%.*]], label [[EXIT:%.*]]
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; CHECK: bb:
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; CHECK-NEXT: [[MUL:%.*]] = mul nuw i8 [[A]], 50
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; CHECK-NEXT: ret i8 [[MUL]]
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; CHECK: exit:
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; CHECK-NEXT: ret i8 0
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;
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entry:
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%cmp = icmp ult i8 %a, 6
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br i1 %cmp, label %bb, label %exit
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bb:
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%mul = mul i8 %a, 50
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ret i8 %mul
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exit:
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ret i8 0
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}
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define i8 @test3(i8 %a) {
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; CHECK-LABEL: @test3(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[CMP:%.*]] = icmp ult i8 [[A:%.*]], 7
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; CHECK-NEXT: br i1 [[CMP]], label [[BB:%.*]], label [[EXIT:%.*]]
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; CHECK: bb:
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; CHECK-NEXT: [[MUL:%.*]] = mul i8 [[A]], 50
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; CHECK-NEXT: ret i8 [[MUL]]
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; CHECK: exit:
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; CHECK-NEXT: ret i8 0
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;
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entry:
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%cmp = icmp ult i8 %a, 7
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br i1 %cmp, label %bb, label %exit
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bb:
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%mul = mul i8 %a, 50
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ret i8 %mul
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exit:
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ret i8 0
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}
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define i8 @test4(i8 %a) {
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; CHECK-LABEL: @test4(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[CMP1:%.*]] = icmp slt i8 [[A:%.*]], 3
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; CHECK-NEXT: [[CMP2:%.*]] = icmp sgt i8 [[A]], -3
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; CHECK-NEXT: [[COND:%.*]] = and i1 [[CMP1]], [[CMP2]]
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; CHECK-NEXT: br i1 [[COND]], label [[BB:%.*]], label [[EXIT:%.*]]
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; CHECK: bb:
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; CHECK-NEXT: [[MUL:%.*]] = mul nsw i8 [[A]], 50
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; CHECK-NEXT: ret i8 [[MUL]]
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; CHECK: exit:
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; CHECK-NEXT: ret i8 0
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;
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entry:
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%cmp1 = icmp slt i8 %a, 3
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%cmp2 = icmp sgt i8 %a, -3
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%cond = and i1 %cmp1, %cmp2
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br i1 %cond, label %bb, label %exit
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bb:
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%mul = mul i8 %a, 50
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ret i8 %mul
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exit:
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ret i8 0
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}
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define i8 @test5(i8 %a) {
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; CHECK-LABEL: @test5(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[CMP1:%.*]] = icmp slt i8 [[A:%.*]], 3
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; CHECK-NEXT: [[CMP2:%.*]] = icmp sgt i8 [[A]], -4
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; CHECK-NEXT: [[COND:%.*]] = and i1 [[CMP1]], [[CMP2]]
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; CHECK-NEXT: br i1 [[COND]], label [[BB:%.*]], label [[EXIT:%.*]]
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; CHECK: bb:
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; CHECK-NEXT: [[MUL:%.*]] = mul i8 [[A]], 50
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; CHECK-NEXT: ret i8 [[MUL]]
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; CHECK: exit:
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; CHECK-NEXT: ret i8 0
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;
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entry:
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%cmp1 = icmp slt i8 %a, 3
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%cmp2 = icmp sgt i8 %a, -4
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%cond = and i1 %cmp1, %cmp2
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br i1 %cond, label %bb, label %exit
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bb:
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%mul = mul i8 %a, 50
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ret i8 %mul
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exit:
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ret i8 0
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}
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define i8 @test6(i8 %a) {
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; CHECK-LABEL: @test6(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[CMP1:%.*]] = icmp slt i8 [[A:%.*]], 4
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; CHECK-NEXT: [[CMP2:%.*]] = icmp sgt i8 [[A]], -3
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; CHECK-NEXT: [[COND:%.*]] = and i1 [[CMP1]], [[CMP2]]
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; CHECK-NEXT: br i1 [[COND]], label [[BB:%.*]], label [[EXIT:%.*]]
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; CHECK: bb:
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; CHECK-NEXT: [[MUL:%.*]] = mul i8 [[A]], 50
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; CHECK-NEXT: ret i8 [[MUL]]
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; CHECK: exit:
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; CHECK-NEXT: ret i8 0
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;
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entry:
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%cmp1 = icmp slt i8 %a, 4
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%cmp2 = icmp sgt i8 %a, -3
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%cond = and i1 %cmp1, %cmp2
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br i1 %cond, label %bb, label %exit
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bb:
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%mul = mul i8 %a, 50
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ret i8 %mul
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exit:
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ret i8 0
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}
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