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https://github.com/c64scene-ar/llvm-6502.git
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8114b718c9
implements rdar://6013816 and the testcase in Transforms/InstCombine/sext-misc.ll. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52440 91177308-0d34-0410-b5e6-96231b3b80d8
66 lines
1.3 KiB
LLVM
66 lines
1.3 KiB
LLVM
; RUN: llvm-as < %s | opt -instcombine | llvm-dis | not grep sext
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declare i32 @llvm.ctpop.i32(i32)
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declare i32 @llvm.ctlz.i32(i32)
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declare i32 @llvm.cttz.i32(i32)
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define i64 @foo(i32 %x) {
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%t = call i32 @llvm.ctpop.i32(i32 %x)
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%s = sext i32 %t to i64
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ret i64 %s
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}
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define i64 @boo(i32 %x) {
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%t = call i32 @llvm.ctlz.i32(i32 %x)
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%s = sext i32 %t to i64
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ret i64 %s
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}
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define i64 @zoo(i32 %x) {
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%t = call i32 @llvm.cttz.i32(i32 %x)
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%s = sext i32 %t to i64
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ret i64 %s
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}
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define i64 @coo(i32 %x) {
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%t = udiv i32 %x, 3
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%s = sext i32 %t to i64
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ret i64 %s
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}
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define i64 @moo(i32 %x) {
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%t = urem i32 %x, 30000
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%s = sext i32 %t to i64
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ret i64 %s
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}
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define i64 @yoo(i32 %x) {
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%u = lshr i32 %x, 3
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%t = mul i32 %u, 3
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%s = sext i32 %t to i64
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ret i64 %s
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}
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define i64 @voo(i32 %x) {
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%t = and i32 %x, 511
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%u = sub i32 20000, %t
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%s = sext i32 %u to i64
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ret i64 %s
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}
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define i32 @woo(i8 %a, i32 %f, i1 %p, i32* %z) {
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%d = lshr i32 %f, 24
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%e = select i1 %p, i32 %d, i32 0
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%s = trunc i32 %e to i16
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%n = sext i16 %s to i32
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ret i32 %n
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}
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; rdar://6013816
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define i16 @test(i16 %t, i1 %cond) nounwind {
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entry:
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br i1 %cond, label %T, label %F
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T:
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%t2 = sext i16 %t to i32
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br label %F
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F:
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%V = phi i32 [%t2, %T], [42, %entry]
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%W = trunc i32 %V to i16
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ret i16 %W
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}
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