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llvm-mirror/test/CodeGen/X86/lea-recursion.ll
Matthias Braun f7935a3f63 X86: Do not use llc -march in tests.
`llc -march` is problematic because it only switches the target
architecture, but leaves the operating system unchanged. This
occasionally leads to indeterministic tests because the OS from
LLVM_DEFAULT_TARGET_TRIPLE is used.

However we can simply always use `llc -mtriple` instead. This changes
all the tests to do this to avoid people using -march when they copy and
paste parts of tests.

See also the discussion in https://reviews.llvm.org/D35287

llvm-svn: 309774
2017-08-02 00:28:10 +00:00

47 lines
2.8 KiB
LLVM

; RUN: llc < %s -mtriple=x86_64-- | grep lea | count 13
; This testcase was written to demonstrate an instruction-selection problem,
; however it also happens to expose a limitation in the DAGCombiner's
; expression reassociation which causes it to miss opportunities for
; constant folding due to the intermediate adds having multiple uses.
; The Reassociate pass has similar limitations. If these limitations are
; fixed, the test commands above will need to be updated to expect fewer
; lea instructions.
@g0 = weak global [1000 x i32] zeroinitializer, align 32 ; <[1000 x i32]*> [#uses=8]
@g1 = weak global [1000 x i32] zeroinitializer, align 32 ; <[1000 x i32]*> [#uses=7]
define void @foo() {
entry:
%tmp4 = load i32, i32* getelementptr ([1000 x i32], [1000 x i32]* @g0, i32 0, i32 0) ; <i32> [#uses=1]
%tmp8 = load i32, i32* getelementptr ([1000 x i32], [1000 x i32]* @g1, i32 0, i32 0) ; <i32> [#uses=1]
%tmp9 = add i32 %tmp4, 1 ; <i32> [#uses=1]
%tmp10 = add i32 %tmp9, %tmp8 ; <i32> [#uses=2]
store i32 %tmp10, i32* getelementptr ([1000 x i32], [1000 x i32]* @g0, i32 0, i32 1)
%tmp8.1 = load i32, i32* getelementptr ([1000 x i32], [1000 x i32]* @g1, i32 0, i32 1) ; <i32> [#uses=1]
%tmp9.1 = add i32 %tmp10, 1 ; <i32> [#uses=1]
%tmp10.1 = add i32 %tmp9.1, %tmp8.1 ; <i32> [#uses=2]
store i32 %tmp10.1, i32* getelementptr ([1000 x i32], [1000 x i32]* @g0, i32 0, i32 2)
%tmp8.2 = load i32, i32* getelementptr ([1000 x i32], [1000 x i32]* @g1, i32 0, i32 2) ; <i32> [#uses=1]
%tmp9.2 = add i32 %tmp10.1, 1 ; <i32> [#uses=1]
%tmp10.2 = add i32 %tmp9.2, %tmp8.2 ; <i32> [#uses=2]
store i32 %tmp10.2, i32* getelementptr ([1000 x i32], [1000 x i32]* @g0, i32 0, i32 3)
%tmp8.3 = load i32, i32* getelementptr ([1000 x i32], [1000 x i32]* @g1, i32 0, i32 3) ; <i32> [#uses=1]
%tmp9.3 = add i32 %tmp10.2, 1 ; <i32> [#uses=1]
%tmp10.3 = add i32 %tmp9.3, %tmp8.3 ; <i32> [#uses=2]
store i32 %tmp10.3, i32* getelementptr ([1000 x i32], [1000 x i32]* @g0, i32 0, i32 4)
%tmp8.4 = load i32, i32* getelementptr ([1000 x i32], [1000 x i32]* @g1, i32 0, i32 4) ; <i32> [#uses=1]
%tmp9.4 = add i32 %tmp10.3, 1 ; <i32> [#uses=1]
%tmp10.4 = add i32 %tmp9.4, %tmp8.4 ; <i32> [#uses=2]
store i32 %tmp10.4, i32* getelementptr ([1000 x i32], [1000 x i32]* @g0, i32 0, i32 5)
%tmp8.5 = load i32, i32* getelementptr ([1000 x i32], [1000 x i32]* @g1, i32 0, i32 5) ; <i32> [#uses=1]
%tmp9.5 = add i32 %tmp10.4, 1 ; <i32> [#uses=1]
%tmp10.5 = add i32 %tmp9.5, %tmp8.5 ; <i32> [#uses=2]
store i32 %tmp10.5, i32* getelementptr ([1000 x i32], [1000 x i32]* @g0, i32 0, i32 6)
%tmp8.6 = load i32, i32* getelementptr ([1000 x i32], [1000 x i32]* @g1, i32 0, i32 6) ; <i32> [#uses=1]
%tmp9.6 = add i32 %tmp10.5, 1 ; <i32> [#uses=1]
%tmp10.6 = add i32 %tmp9.6, %tmp8.6 ; <i32> [#uses=1]
store i32 %tmp10.6, i32* getelementptr ([1000 x i32], [1000 x i32]* @g0, i32 0, i32 7)
ret void
}