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https://github.com/c64scene-ar/llvm-6502.git
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789efbad2a
SelectionDAG::getConstantFP(double Val, EVT VT, bool isTarget); should not be used when Val is not a simple constant (as the comment in SelectionDAG.h indicates). This patch avoids using this function when folding an unknown constant through a bitcast, where it cannot be guaranteed that Val will be a simple constant. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163703 91177308-0d34-0410-b5e6-96231b3b80d8
70 lines
1.4 KiB
LLVM
70 lines
1.4 KiB
LLVM
; RUN: llc < %s -mtriple=armv4t-unknown-linux-gnueabi -disable-cgp-branch-opts -verify-machineinstrs | FileCheck %s
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define i32 @f1() {
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; CHECK: f1
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; CHECK: mov r0, #0
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ret i32 0
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}
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define i32 @f2() {
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; CHECK: f2
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; CHECK: mov r0, #255
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ret i32 255
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}
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define i32 @f3() {
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; CHECK: f3
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; CHECK: mov r0, #256
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ret i32 256
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}
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define i32 @f4() {
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; CHECK: f4
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; CHECK: orr{{.*}}#256
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ret i32 257
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}
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define i32 @f5() {
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; CHECK: f5
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; CHECK: mov r0, #-1073741761
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ret i32 -1073741761
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}
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define i32 @f6() {
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; CHECK: f6
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; CHECK: mov r0, #1008
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ret i32 1008
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}
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define void @f7(i32 %a) {
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; CHECK: f7
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; CHECK: cmp r0, #65536
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%b = icmp ugt i32 %a, 65536
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br i1 %b, label %r, label %r
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r:
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ret void
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}
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define i32 @f8() nounwind {
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; Check that constant propagation through (i32)-1 => (float)Nan => (i32)-1
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; gives expected result
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; CHECK: f8
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; CHECK: mvn r0, #0
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%tmp0 = bitcast i32 -1 to float
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%tmp1 = bitcast float %tmp0 to i32
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ret i32 %tmp1
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}
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%t1 = type { <3 x float>, <3 x float> }
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@const1 = global %t1 { <3 x float> zeroinitializer,
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<3 x float> <float 1.000000e+00,
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float 2.000000e+00,
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float 3.000000e+00> }, align 16
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; CHECK: const1
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; CHECK: .zero 16
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; CHECK: float 1.0
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; CHECK: float 2.0
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; CHECK: float 3.0
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; CHECK: .zero 4
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