Fix for PR1095:

LLVM would miscompile ASM dialects when compiling for PPC. Added dialects for
the X86 and PPC backends. It defaults to "0", the first variant of a compound
inline asm expression.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33246 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 26 insertions, 0 deletions

diff --git a/test/CodeGen/PowerPC/2007-01-15-AsmDialect.ll b/test/CodeGen/PowerPC/2007-01-15-AsmDialect.ll
new file mode 100644
index 0000000..916e168
--- /dev/null
+++ b/test/CodeGen/PowerPC/2007-01-15-AsmDialect.ll
@@ -0,0 +1,26 @@
+; RUN: llvm-as < %s | llc -march=ppc32 | grep cntlzw
+
+define i32 %foo() {
+entry:
+	%retval = alloca i32, align 4		; <i32*> [#uses=2]
+	%tmp = alloca i32, align 4		; <i32*> [#uses=2]
+	%ctz_x = alloca i32, align 4		; <i32*> [#uses=3]
+	%ctz_c = alloca i32, align 4		; <i32*> [#uses=2]
+	"alloca point" = bitcast i32 0 to i32		; <i32> [#uses=0]
+	store i32 61440, i32* %ctz_x
+	%tmp = load i32* %ctz_x		; <i32> [#uses=1]
+	%tmp1 = sub i32 0, %tmp		; <i32> [#uses=1]
+	%tmp2 = load i32* %ctz_x		; <i32> [#uses=1]
+	%tmp3 = and i32 %tmp1, %tmp2		; <i32> [#uses=1]
+	%tmp4 = call i32 asm "$(cntlz$|cntlzw$) $0,$1", "=r,r,~{dirflag},~{fpsr},~{flags}"( i32 %tmp3 )		; <i32> [#uses=1]
+	store i32 %tmp4, i32* %ctz_c
+	%tmp5 = load i32* %ctz_c		; <i32> [#uses=1]
+	store i32 %tmp5, i32* %tmp
+	%tmp6 = load i32* %tmp		; <i32> [#uses=1]
+	store i32 %tmp6, i32* %retval
+	br label %return
+
+return:		; preds = %entry
+	%retval = load i32* %retval		; <i32> [#uses=1]
+	ret i32 %retval
+}