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562cc40dbb
of a computation. This fixes some infinite loops when dealing with TD that has no native types. llvm-svn: 86670
42 lines
1.1 KiB
LLVM
42 lines
1.1 KiB
LLVM
; RUN: opt < %s -instcombine -S | FileCheck %s
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target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32"
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define i32 @mul(i32 %x, i32 %y) {
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%A = trunc i32 %x to i8
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%B = trunc i32 %y to i8
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%C = mul i8 %A, %B
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%D = zext i8 %C to i32
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ret i32 %D
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; CHECK: %C = mul i32 %x, %y
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; CHECK: %D = and i32 %C, 255
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; CHECK: ret i32 %D
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}
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define i32 @select1(i1 %cond, i32 %x, i32 %y, i32 %z) {
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%A = trunc i32 %x to i8
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%B = trunc i32 %y to i8
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%C = trunc i32 %z to i8
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%D = add i8 %A, %B
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%E = select i1 %cond, i8 %C, i8 %D
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%F = zext i8 %E to i32
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ret i32 %F
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; CHECK: %D = add i32 %x, %y
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; CHECK: %E = select i1 %cond, i32 %z, i32 %D
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; CHECK: %F = and i32 %E, 255
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; CHECK: ret i32 %F
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}
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define i8 @select2(i1 %cond, i8 %x, i8 %y, i8 %z) {
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%A = zext i8 %x to i32
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%B = zext i8 %y to i32
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%C = zext i8 %z to i32
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%D = add i32 %A, %B
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%E = select i1 %cond, i32 %C, i32 %D
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%F = trunc i32 %E to i8
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ret i8 %F
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; CHECK: %D = add i8 %x, %y
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; CHECK: %E = select i1 %cond, i8 %z, i8 %D
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; CHECK: ret i8 %E
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}
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