81 lines
2.6 KiB
LLVM
81 lines
2.6 KiB
LLVM
; RUN: llc -O0 < %s -verify-machineinstrs
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; RUN: llc < %s -verify-machineinstrs
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target triple = "x86_64-apple-macosx10.7"
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; This test case extracts a sub_8bit_hi sub-register:
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;
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; %R8B<def> = COPY %BH, %EBX<imp-use,kill>
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; %ESI<def> = MOVZX32_NOREXrr8 %R8B<kill>
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;
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; The register allocation above is invalid, %BH can only be encoded without an
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; REX prefix, so the destination register must be GR8_NOREX. The code above
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; triggers an assertion in copyPhysReg.
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;
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; <rdar://problem/10248099>
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define void @f() nounwind uwtable ssp {
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entry:
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%0 = load i32, i32* undef, align 4
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%add = add i32 0, %0
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%conv1 = trunc i32 %add to i16
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%bf.value = and i16 %conv1, 255
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%1 = and i16 %bf.value, 255
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%2 = shl i16 %1, 8
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%3 = load i16, i16* undef, align 1
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%4 = and i16 %3, 255
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%5 = or i16 %4, %2
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store i16 %5, i16* undef, align 1
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%6 = load i16, i16* undef, align 1
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%7 = lshr i16 %6, 8
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%bf.clear2 = and i16 %7, 255
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%conv3 = zext i16 %bf.clear2 to i32
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%rem = srem i32 %conv3, 15
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%conv4 = trunc i32 %rem to i16
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%bf.value5 = and i16 %conv4, 255
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%8 = and i16 %bf.value5, 255
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%9 = shl i16 %8, 8
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%10 = or i16 undef, %9
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store i16 %10, i16* undef, align 1
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ret void
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}
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; This test case extracts a sub_8bit_hi sub-register:
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;
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; %vreg2<def> = COPY %vreg1:sub_8bit_hi; GR8:%vreg2 GR64_ABCD:%vreg1
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; TEST8ri %vreg2, 1, %EFLAGS<imp-def>; GR8:%vreg2
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;
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; %vreg2 must be constrained to GR8_NOREX, or the COPY could become impossible.
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;
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; PR11088
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define fastcc i32 @g(i64 %FB) nounwind uwtable readnone align 2 {
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entry:
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%and32 = and i64 %FB, 256
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%cmp33 = icmp eq i64 %and32, 0
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%Features.6.or35 = select i1 %cmp33, i32 0, i32 undef
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%cmp38 = icmp eq i64 undef, 0
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%or40 = or i32 %Features.6.or35, 4
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%Features.8 = select i1 %cmp38, i32 %Features.6.or35, i32 %or40
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%and42 = and i64 %FB, 32
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%or45 = or i32 %Features.8, 2
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%cmp43 = icmp eq i64 %and42, 0
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%Features.8.or45 = select i1 %cmp43, i32 %Features.8, i32 %or45
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%and47 = and i64 %FB, 8192
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%cmp48 = icmp eq i64 %and47, 0
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%or50 = or i32 %Features.8.or45, 32
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%Features.10 = select i1 %cmp48, i32 %Features.8.or45, i32 %or50
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%or55 = or i32 %Features.10, 64
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%Features.10.or55 = select i1 undef, i32 %Features.10, i32 %or55
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%and57 = lshr i64 %FB, 2
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%and57.tr = trunc i64 %and57 to i32
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%or60 = and i32 %and57.tr, 1
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%Features.12 = or i32 %Features.10.or55, %or60
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%and62 = and i64 %FB, 128
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%or65 = or i32 %Features.12, 8
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%cmp63 = icmp eq i64 %and62, 0
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%Features.12.or65 = select i1 %cmp63, i32 %Features.12, i32 %or65
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%Features.14 = select i1 undef, i32 undef, i32 %Features.12.or65
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%Features.16 = select i1 undef, i32 undef, i32 %Features.14
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ret i32 %Features.16
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}
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