derek.holloway
7502bf64a4
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33 lines
1.2 KiB
LLVM
33 lines
1.2 KiB
LLVM
; RUN: llc -verify-machineinstrs < %s | FileCheck %s
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; RUN: llc -verify-machineinstrs < %s -regalloc=fast -optimize-regalloc=0 | FileCheck %s
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; The first argument of subfc must not be the same as any other register.
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; CHECK: APP
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; CHECK: subc [[REG:[0-9]+]],
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; CHECK-NOT: [[REG]]
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; CHECK: NO_APP
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; PR1357
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;target datalayout = "E-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64"
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target triple = "powerpc-unknown-linux-gnu"
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;long long test(int A, int B, int C) {
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; unsigned X, Y;
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; __asm__ ("subf%I3c %1,%4,%3\n\tsubfze %0,%2"
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; : "=r" (X), "=&r" (Y)
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; : "r" (A), "rI" (B), "r" (C));
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; return ((long long)Y << 32) | X;
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;}
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define i64 @test(i32 %A, i32 %B, i32 %C) nounwind {
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entry:
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%Y = alloca i32, align 4 ; <ptr> [#uses=2]
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%tmp4 = call i32 asm "subf${3:I}c $1,$4,$3\0A\09subfze $0,$2", "=r,=*&r,r,rI,r"( ptr elementtype( i32) %Y, i32 %A, i32 %B, i32 %C ) ; <i32> [#uses=1]
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%tmp5 = load i32, ptr %Y ; <i32> [#uses=1]
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%tmp56 = zext i32 %tmp5 to i64 ; <i64> [#uses=1]
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%tmp7 = shl i64 %tmp56, 32 ; <i64> [#uses=1]
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%tmp89 = zext i32 %tmp4 to i64 ; <i64> [#uses=1]
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%tmp10 = or i64 %tmp7, %tmp89 ; <i64> [#uses=1]
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ret i64 %tmp10
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}
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