Fix darwin ppc llvm-gcc build breakage: intercept

ppcf128 to i32 conversion and expand it into a code
sequence like in LegalizeDAG.  This needs custom
ppc lowering of FP_ROUND_INREG, so turn that on and
make it work with LegalizeTypes.  Probably PPC should
simply custom lower the original conversion.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58329 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 33 insertions, 0 deletions

diff --git a/test/CodeGen/PowerPC/2008-10-28-f128-i32.ll b/test/CodeGen/PowerPC/2008-10-28-f128-i32.ll
new file mode 100644
index 0000000000..4db577357d
--- /dev/null
+++ b/test/CodeGen/PowerPC/2008-10-28-f128-i32.ll
@@ -0,0 +1,33 @@
+; RUN: llvm-as < %s | llc -march=ppc32 -o - | not grep fixunstfsi
+
+define i64 @__fixunstfdi(ppc_fp128 %a) nounwind readnone {
+entry:
+	%0 = fcmp olt ppc_fp128 %a, 0xM00000000000000000000000000000000		; <i1> [#uses=1]
+	br i1 %0, label %bb5, label %bb1
+
+bb1:		; preds = %entry
+	%1 = mul ppc_fp128 %a, 0xM3DF00000000000000000000000000000		; <ppc_fp128> [#uses=1]
+	%2 = fptoui ppc_fp128 %1 to i32		; <i32> [#uses=1]
+	%3 = zext i32 %2 to i64		; <i64> [#uses=1]
+	%4 = shl i64 %3, 32		; <i64> [#uses=3]
+	%5 = uitofp i64 %4 to ppc_fp128		; <ppc_fp128> [#uses=1]
+	%6 = sub ppc_fp128 %a, %5		; <ppc_fp128> [#uses=3]
+	%7 = fcmp olt ppc_fp128 %6, 0xM00000000000000000000000000000000		; <i1> [#uses=1]
+	br i1 %7, label %bb2, label %bb3
+
+bb2:		; preds = %bb1
+	%8 = sub ppc_fp128 0xM80000000000000000000000000000000, %6		; <ppc_fp128> [#uses=1]
+	%9 = fptoui ppc_fp128 %8 to i32		; <i32> [#uses=1]
+	%10 = zext i32 %9 to i64		; <i64> [#uses=1]
+	%11 = sub i64 %4, %10		; <i64> [#uses=1]
+	ret i64 %11
+
+bb3:		; preds = %bb1
+	%12 = fptoui ppc_fp128 %6 to i32		; <i32> [#uses=1]
+	%13 = zext i32 %12 to i64		; <i64> [#uses=1]
+	%14 = or i64 %13, %4		; <i64> [#uses=1]
+	ret i64 %14
+
+bb5:		; preds = %entry
+	ret i64 0
+}