llvm-mirror/test/Transforms/InstCombine/2007-12-12-GEPScale.ll

; RUN: opt %s -instcombine | llvm-dis | not grep 1431655764

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-f80:32:32"

define i8* @foo([100 x {i8,i8,i8}]* %x) {
entry:
        %p = bitcast [100 x {i8,i8,i8}]* %x to i8*
        %q = getelementptr i8* %p, i32 -4
        ret i8* %q
}
Change these tests to feed the assembly files to opt directly, instead of using llvm-as, now that opt supports this. llvm-svn: 81226 2009-09-08 18:50:01 +02:00			`; RUN: opt %s -instcombine \| llvm-dis \| not grep 1431655764`
1. "Upgrage" comments. 2. Using zero-extended value of Scale and unsigned division is safe provided that Scale doesn't have the sign bit set. Previously these 2 instructions: %p = bitcast [100 x {i8,i8,i8}]* %x to i8* %q = getelementptr i8* %p, i32 -4 were combined into: %q = getelementptr [100 x { i8, i8, i8 }]* %x, i32 0, i32 1431655764, i32 0 what was incorrect. llvm-svn: 44936 2007-12-12 16:21:32 +01:00
			`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-f80:32:32"`

			`define i8* @foo([100 x {i8,i8,i8}]* %x) {`
			`entry:`
			`%p = bitcast [100 x {i8,i8,i8}]* %x to i8*`
			`%q = getelementptr i8* %p, i32 -4`
			`ret i8* %q`
			`}`