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https://github.com/c64scene-ar/llvm-6502.git
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d7f5a58890
when doing this transform if the GEP is not inbounds. No testcase because it is very difficult to trigger this: instcombine already canonicalizes GEP indices to pointer size, so it relies specific permutations of the instcombine worklist. Thanks to Duncan for pointing this possible problem out. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92495 91177308-0d34-0410-b5e6-96231b3b80d8
113 lines
2.8 KiB
LLVM
113 lines
2.8 KiB
LLVM
; RUN: opt < %s -instcombine -S | FileCheck %s
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@G16 = internal constant [10 x i16] [i16 35, i16 82, i16 69, i16 81, i16 85,
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i16 73, i16 82, i16 69, i16 68, i16 0]
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@GD = internal constant [6 x double]
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[double -10.0, double 1.0, double 4.0, double 2.0, double -20.0, double -40.0]
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define i1 @test1(i32 %X) {
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%P = getelementptr inbounds [10 x i16]* @G16, i32 0, i32 %X
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%Q = load i16* %P
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%R = icmp eq i16 %Q, 0
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ret i1 %R
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; CHECK: @test1
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; CHECK-NEXT: %R = icmp eq i32 %X, 9
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; CHECK-NEXT: ret i1 %R
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}
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define i1 @test2(i32 %X) {
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%P = getelementptr inbounds [10 x i16]* @G16, i32 0, i32 %X
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%Q = load i16* %P
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%R = icmp slt i16 %Q, 85
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ret i1 %R
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; CHECK: @test2
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; CHECK-NEXT: %R = icmp ne i32 %X, 4
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; CHECK-NEXT: ret i1 %R
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}
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define i1 @test3(i32 %X) {
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%P = getelementptr inbounds [6 x double]* @GD, i32 0, i32 %X
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%Q = load double* %P
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%R = fcmp oeq double %Q, 1.0
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ret i1 %R
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; CHECK: @test3
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; CHECK-NEXT: %R = icmp eq i32 %X, 1
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; CHECK-NEXT: ret i1 %R
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}
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define i1 @test4(i32 %X) {
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%P = getelementptr inbounds [10 x i16]* @G16, i32 0, i32 %X
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%Q = load i16* %P
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%R = icmp sle i16 %Q, 73
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ret i1 %R
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; CHECK: @test4
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; CHECK-NEXT: lshr i32 933, %X
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; CHECK-NEXT: and i32 {{.*}}, 1
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; CHECK-NEXT: %R = icmp ne i32 {{.*}}, 0
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; CHECK-NEXT: ret i1 %R
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}
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define i1 @test5(i32 %X) {
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%P = getelementptr inbounds [10 x i16]* @G16, i32 0, i32 %X
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%Q = load i16* %P
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%R = icmp eq i16 %Q, 69
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ret i1 %R
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; CHECK: @test5
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; CHECK-NEXT: icmp eq i32 %X, 2
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; CHECK-NEXT: icmp eq i32 %X, 7
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; CHECK-NEXT: %R = or i1
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; CHECK-NEXT: ret i1 %R
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}
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define i1 @test6(i32 %X) {
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%P = getelementptr inbounds [6 x double]* @GD, i32 0, i32 %X
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%Q = load double* %P
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%R = fcmp ogt double %Q, 0.0
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ret i1 %R
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; CHECK: @test6
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; CHECK-NEXT: add i32 %X, -1
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; CHECK-NEXT: %R = icmp ult i32 {{.*}}, 3
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; CHECK-NEXT: ret i1 %R
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}
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define i1 @test7(i32 %X) {
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%P = getelementptr inbounds [6 x double]* @GD, i32 0, i32 %X
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%Q = load double* %P
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%R = fcmp olt double %Q, 0.0
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ret i1 %R
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; CHECK: @test7
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; CHECK-NEXT: add i32 %X, -1
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; CHECK-NEXT: %R = icmp ugt i32 {{.*}}, 2
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; CHECK-NEXT: ret i1 %R
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}
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define i1 @test8(i32 %X) {
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%P = getelementptr inbounds [10 x i16]* @G16, i32 0, i32 %X
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%Q = load i16* %P
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%R = and i16 %Q, 3
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%S = icmp eq i16 %R, 0
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ret i1 %S
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; CHECK: @test8
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; CHECK-NEXT: add i32 %X, -8
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; CHECK-NEXT: %S = icmp ult i32 {{.*}}, 2
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; CHECK-NEXT: ret i1 %S
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}
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@GA = internal constant [4 x { i32, i32 } ] [
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{ i32, i32 } { i32 1, i32 0 },
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{ i32, i32 } { i32 2, i32 1 },
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{ i32, i32 } { i32 3, i32 1 },
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{ i32, i32 } { i32 4, i32 0 }
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]
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define i1 @test9(i32 %X) {
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%P = getelementptr inbounds [4 x { i32, i32 } ]* @GA, i32 0, i32 %X, i32 1
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%Q = load i32* %P
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%R = icmp eq i32 %Q, 1
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ret i1 %R
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; CHECK: @test9
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; CHECK-NEXT: add i32 %X, -1
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; CHECK-NEXT: %R = icmp ult i32 {{.*}}, 2
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; CHECK-NEXT: ret i1 %R
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}
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