It's not necessary to do rounding for alloca operations when the requested

alignment is equal to the stack alignment.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40004 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 30 insertions, 0 deletions

diff --git a/test/CodeGen/ARM/2007-05-14-RegScavengerAssert.ll b/test/CodeGen/ARM/2007-05-14-RegScavengerAssert.ll
new file mode 100644
index 0000000..430b368
--- /dev/null
+++ b/test/CodeGen/ARM/2007-05-14-RegScavengerAssert.ll
@@ -0,0 +1,30 @@
+; RUN: llvm-as < %s | llc -march=arm -mtriple=arm-linux-gnueabi
+; PR1406
+
+	%struct.AVClass = type { i8*, i8* (i8*)*, %struct.AVOption* }
+	%struct.AVCodec = type { i8*, i32, i32, i32, i32 (%struct.AVCodecContext*)*, i32 (%struct.AVCodecContext*, i8*, i32, i8*)*, i32 (%struct.AVCodecContext*)*, i32 (%struct.AVCodecContext*, i8*, i32*, i8*, i32)*, i32, %struct.AVCodec*, void (%struct.AVCodecContext*)*, %struct.AVRational*, i32* }
+	%struct.AVCodecContext = type { %struct.AVClass*, i32, i32, i32, i32, i32, i8*, i32, %struct.AVRational, i32, i32, i32, i32, i32, void (%struct.AVCodecContext*, %struct.AVFrame*, i32*, i32, i32, i32)*, i32, i32, i32, i32, i32, i32, i32, float, float, i32, i32, i32, i32, float, i32, i32, i32, %struct.AVCodec*, i8*, i32, i32, void (%struct.AVCodecContext*, i8*, i32, i32)*, i32, i32, i32, i32, i32, i32, i32, i32, i32, i8*, [32 x i8], i32, i32, i32, i32, i32, i32, i32, float, i32, i32 (%struct.AVCodecContext*, %struct.AVFrame*)*, void (%struct.AVCodecContext*, %struct.AVFrame*)*, i32, i32, i32, i32, i8*, i8*, float, float, i32, %struct.RcOverride*, i32, i8*, i32, i32, i32, float, float, float, float, i32, float, float, float, float, float, i32, i32, i32, i32*, i32, i32, i32, i32, %struct.AVRational, %struct.AVFrame*, i32, i32, [4 x i64], i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32 (%struct.AVCodecContext*, i32*)*, i32, i32, i32, i32, i32, i32, i8*, i32, i32, i32, i32, i32, i32, i16*, i16*, i32, i32, i32, i32, %struct.AVPaletteControl*, i32, i32 (%struct.AVCodecContext*, %struct.AVFrame*)*, i32, i32, i32, i32, i32, i32, i32, i32 (%struct.AVCodecContext*, i32 (%struct.AVCodecContext*, i8*)*, i8**, i32*, i32)*, i8*, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, float, i32, i32, i32, i32, i32, i32, i32, i32, float, i32, i32, i32, i32, i32, i32, float, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i64 }
+	%struct.AVFrame = type { [4 x i8*], [4 x i32], [4 x i8*], i32, i32, i64, i32, i32, i32, i32, i32, i8*, i32, i8*, [2 x [2 x i16]*], i32*, i8, i8*, [4 x i64], i32, i32, i32, i32, i32, %struct.AVPanScan*, i32, i32, i16*, [2 x i8*] }
+	%struct.AVOption = type opaque
+	%struct.AVPaletteControl = type { i32, [256 x i32] }
+	%struct.AVPanScan = type { i32, i32, i32, [3 x [2 x i16]] }
+	%struct.AVRational = type { i32, i32 }
+	%struct.RcOverride = type { i32, i32, i32, float }
+
+define i32 @decode_init(%struct.AVCodecContext* %avctx) {
+entry:
+	br i1 false, label %bb, label %cond_next789
+
+bb:		; preds = %bb, %entry
+	br i1 false, label %bb59, label %bb
+
+bb59:		; preds = %bb
+	%tmp68 = sdiv i64 0, 0		; <i64> [#uses=1]
+	%tmp6869 = trunc i64 %tmp68 to i32		; <i32> [#uses=2]
+	%tmp81 = call i32 asm "smull $0, $1, $2, $3     \0A\09mov   $0, $0,     lsr $4\0A\09add   $1, $0, $1, lsl $5\0A\09", "=&r,=*&r,r,r,i,i"( i32* null, i32 %tmp6869, i32 13316085, i32 23, i32 9 )		; <i32> [#uses=0]
+	%tmp90 = call i32 asm "smull $0, $1, $2, $3     \0A\09mov   $0, $0,     lsr $4\0A\09add   $1, $0, $1, lsl $5\0A\09", "=&r,=*&r,r,r,i,i"( i32* null, i32 %tmp6869, i32 10568984, i32 23, i32 9 )		; <i32> [#uses=0]
+	unreachable
+
+cond_next789:		; preds = %entry
+	ret i32 0
+}