| # RUN: llc -mtriple=s390x-linux-gnu -mcpu=z10 -no-integrated-as -start-after=block-placement %s -o - | FileCheck %s |
| # Test that LTEBR is used without an unnecessary LER |
| |
| --- | |
| define float @f15(float %val, float %dummy, float* %dest) { |
| entry: |
| call void asm sideeffect "blah $0", "{f2}"(float %val) |
| %cmp = fcmp olt float %val, 0.000000e+00 |
| br i1 %cmp, label %exit, label %store |
| |
| store: ; preds = %entry |
| store float %val, float* %dest |
| br label %exit |
| |
| exit: ; preds = %store, %entry |
| ret float %val |
| } |
| |
| ... |
| |
| # CHECK: ltebr %f2, %f0 |
| |
| --- |
| name: f15 |
| tracksRegLiveness: true |
| liveins: |
| - { reg: '%f0s', virtual-reg: '' } |
| - { reg: '%r2d', virtual-reg: '' } |
| body: | |
| bb.0.entry: |
| liveins: %f0s, %r2d |
| |
| LTEBRCompare %f0s, %f0s, implicit-def %cc |
| %f2s = LER %f0s |
| INLINEASM $"blah $0", 1, 9, %f2s |
| CondReturn 15, 4, implicit %f0s, implicit %cc |
| |
| bb.1.store: |
| liveins: %f0s, %r2d |
| |
| STE %f0s, killed %r2d, 0, _ :: (store 4 into %ir.dest) |
| Return implicit %f0s |
| |
| ... |
