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https://github.com/c64scene-ar/llvm-6502.git
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3cc3283fcb
comparison that would overflow. - The other under/overflow cases can't actually happen because the immediates which would trigger them are legal (so we don't enter this code), but adjusted the style to make it clear the transform is always valid. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112053 91177308-0d34-0410-b5e6-96231b3b80d8
56 lines
1.0 KiB
LLVM
56 lines
1.0 KiB
LLVM
; RUN: llc < %s -march=thumb -mattr=+thumb2 | FileCheck %s
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; 0x000000bb = 187
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define i1 @f1(i32 %a) {
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; CHECK: f1:
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; CHECK: cmp r0, #187
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%tmp = icmp ne i32 %a, 187
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ret i1 %tmp
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}
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; 0x00aa00aa = 11141290
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define i1 @f2(i32 %a) {
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; CHECK: f2:
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; CHECK: cmp.w r0, #11141290
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%tmp = icmp eq i32 %a, 11141290
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ret i1 %tmp
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}
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; 0xcc00cc00 = 3422604288
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define i1 @f3(i32 %a) {
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; CHECK: f3:
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; CHECK: cmp.w r0, #-872363008
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%tmp = icmp ne i32 %a, 3422604288
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ret i1 %tmp
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}
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; 0xdddddddd = 3722304989
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define i1 @f4(i32 %a) {
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; CHECK: f4:
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; CHECK: cmp.w r0, #-572662307
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%tmp = icmp ne i32 %a, 3722304989
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ret i1 %tmp
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}
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; 0x00110000 = 1114112
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define i1 @f5(i32 %a) {
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; CHECK: f5:
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; CHECK: cmp.w r0, #1114112
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%tmp = icmp eq i32 %a, 1114112
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ret i1 %tmp
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}
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; Check that we don't do an invalid (a > b) --> !(a < b + 1) transform.
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;
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; CHECK: f6:
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; CHECK-NOT: cmp.w r0, #-2147483648
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; CHECK: bx lr
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define i32 @f6(i32 %a) {
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%tmp = icmp sgt i32 %a, 2147483647
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br i1 %tmp, label %true, label %false
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true:
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ret i32 2
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false:
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ret i32 0
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}
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