forked from OSchip/llvm-project
193 lines
4.4 KiB
LLVM
193 lines
4.4 KiB
LLVM
; RUN: opt < %s -indvars -S | FileCheck %s
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define i32 @test.signed.add.0(i32* %array, i32 %length, i32 %init) {
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; CHECK-LABEL: @test.signed.add.0
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entry:
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%upper = icmp slt i32 %init, %length
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br i1 %upper, label %loop, label %exit
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loop:
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; CHECK-LABEL: loop
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%civ = phi i32 [ %init, %entry ], [ %civ.inc, %latch ]
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%civ.inc = add i32 %civ, 1
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; CHECK: %civ.inc = add nsw i32 %civ, 1
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%cmp = icmp slt i32 %civ.inc, %length
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br i1 %cmp, label %latch, label %break
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latch:
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store i32 0, i32* %array
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%check = icmp slt i32 %civ.inc, %length
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br i1 %check, label %loop, label %break
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break:
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ret i32 %civ.inc
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exit:
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ret i32 42
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}
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define i32 @test.signed.add.1(i32* %array, i32 %length, i32 %init) {
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; CHECK-LABEL: @test.signed.add.1
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entry:
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%upper = icmp sle i32 %init, %length
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br i1 %upper, label %loop, label %exit
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loop:
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; CHECK-LABEL: loop
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%civ = phi i32 [ %init, %entry ], [ %civ.inc, %latch ]
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%civ.inc = add i32 %civ, 1
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; CHECK: %civ.inc = add i32 %civ, 1
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%cmp = icmp slt i32 %civ.inc, %length
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br i1 %cmp, label %latch, label %break
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latch:
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store i32 0, i32* %array
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%check = icmp slt i32 %civ.inc, %length
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br i1 %check, label %loop, label %break
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break:
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ret i32 %civ.inc
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exit:
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ret i32 42
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}
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define i32 @test.unsigned.add.0(i32* %array, i32 %length, i32 %init) {
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; CHECK-LABEL: @test.unsigned.add.0
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entry:
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%upper = icmp ult i32 %init, %length
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br i1 %upper, label %loop, label %exit
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loop:
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; CHECK-LABEL: loop
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%civ = phi i32 [ %init, %entry ], [ %civ.inc, %latch ]
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%civ.inc = add i32 %civ, 1
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; CHECK: %civ.inc = add nuw i32 %civ, 1
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%cmp = icmp slt i32 %civ.inc, %length
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br i1 %cmp, label %latch, label %break
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latch:
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store i32 0, i32* %array
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%check = icmp ult i32 %civ.inc, %length
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br i1 %check, label %loop, label %break
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break:
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ret i32 %civ.inc
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exit:
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ret i32 42
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}
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define i32 @test.unsigned.add.1(i32* %array, i32 %length, i32 %init) {
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; CHECK-LABEL: @test.unsigned.add.1
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entry:
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%upper = icmp ule i32 %init, %length
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br i1 %upper, label %loop, label %exit
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loop:
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; CHECK-LABEL: loop
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%civ = phi i32 [ %init, %entry ], [ %civ.inc, %latch ]
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%civ.inc = add i32 %civ, 1
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; CHECK: %civ.inc = add i32 %civ, 1
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%cmp = icmp slt i32 %civ.inc, %length
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br i1 %cmp, label %latch, label %break
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latch:
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store i32 0, i32* %array
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%check = icmp ult i32 %civ.inc, %length
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br i1 %check, label %loop, label %break
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break:
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ret i32 %civ.inc
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exit:
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ret i32 42
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}
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define hidden void @test.shl.exact.equal() {
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; CHECK-LABEL: @test.shl.exact.equal
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entry:
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br label %for.body
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for.body:
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; CHECK-LABEL: for.body
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%k.021 = phi i32 [ 1, %entry ], [ %inc, %for.body ]
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%shl = shl i32 1, %k.021
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%shr1 = ashr i32 %shl, 1
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; CHECK: %shr1 = ashr exact i32 %shl, 1
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%shr2 = lshr i32 %shl, 1
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; CHECK: %shr2 = lshr exact i32 %shl, 1
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%inc = add nuw nsw i32 %k.021, 1
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%exitcond = icmp eq i32 %inc, 9
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br i1 %exitcond, label %for.end, label %for.body
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for.end:
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ret void
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}
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define hidden void @test.shl.exact.greater() {
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; CHECK-LABEL: @test.shl.exact.greater
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entry:
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br label %for.body
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for.body:
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; CHECK-LABEL: for.body
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%k.021 = phi i32 [ 3, %entry ], [ %inc, %for.body ]
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%shl = shl i32 1, %k.021
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%shr1 = ashr i32 %shl, 2
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; CHECK: %shr1 = ashr exact i32 %shl, 2
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%shr2 = lshr i32 %shl, 2
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; CHECK: %shr2 = lshr exact i32 %shl, 2
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%inc = add nuw nsw i32 %k.021, 1
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%exitcond = icmp eq i32 %inc, 9
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br i1 %exitcond, label %for.end, label %for.body
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for.end:
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ret void
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}
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define hidden void @test.shl.exact.unbound(i32 %arg) {
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; CHECK-LABEL: @test.shl.exact.unbound
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entry:
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br label %for.body
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for.body:
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; CHECK-LABEL: for.body
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%k.021 = phi i32 [ 2, %entry ], [ %inc, %for.body ]
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%shl = shl i32 1, %k.021
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%shr1 = ashr i32 %shl, 2
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; CHECK: %shr1 = ashr exact i32 %shl, 2
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%shr2 = lshr i32 %shl, 2
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; CHECK: %shr2 = lshr exact i32 %shl, 2
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%inc = add nuw nsw i32 %k.021, 1
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%exitcond = icmp eq i32 %inc, %arg
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br i1 %exitcond, label %for.end, label %for.body
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for.end:
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ret void
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}
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define hidden void @test.shl.nonexact() {
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; CHECK-LABEL: @test.shl.nonexact
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entry:
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br label %for.body
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for.body:
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; CHECK-LABEL: for.body
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%k.021 = phi i32 [ 2, %entry ], [ %inc, %for.body ]
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%shl = shl i32 1, %k.021
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%shr1 = ashr i32 %shl, 3
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; CHECK: %shr1 = ashr i32 %shl, 3
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%shr2 = lshr i32 %shl, 3
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; CHECK: %shr2 = lshr i32 %shl, 3
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%inc = add nuw nsw i32 %k.021, 1
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%exitcond = icmp eq i32 %inc, 9
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br i1 %exitcond, label %for.end, label %for.body
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for.end:
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ret void
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}
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!0 = !{i32 0, i32 2}
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!1 = !{i32 0, i32 42}
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