--- /dev/null
+# RUN: llc -mtriple=x86_64-linux-gnu -run-pass=instruction-select -verify-machineinstrs %s -o - | FileCheck %s --check-prefixes=CHECK
+
+--- |
+
+ define i32 @test(i32 %a) {
+ entry:
+ %cmp = trunc i32 %a to i1
+ br i1 %cmp, label %true, label %false
+
+ true: ; preds = %entry
+ ret i32 0
+
+ false: ; preds = %entry
+ ret i32 1
+ }
+
+...
+---
+name: test
+alignment: 16
+legalized: true
+regBankSelected: true
+registers:
+ - { id: 0, class: gpr, preferred-register: '' }
+ - { id: 1, class: gpr, preferred-register: '' }
+ - { id: 2, class: gpr, preferred-register: '' }
+ - { id: 3, class: gpr, preferred-register: '' }
+body: |
+ bb.1.entry:
+ successors: %bb.2(0x40000000), %bb.3(0x40000000)
+ liveins: $edi
+
+ %0(s32) = COPY $edi
+ %2(s32) = G_CONSTANT i32 0
+ %3(s32) = G_CONSTANT i32 1
+ %1(s1) = G_TRUNC %0(s32)
+ G_BRCOND %1(s1), %bb.2
+ G_BR %bb.3
+
+ bb.2.true:
+ $eax = COPY %2(s32)
+ RET 0, implicit $eax
+
+ bb.3.false:
+ $eax = COPY %3(s32)
+ RET 0, implicit $eax
+
+...
--- /dev/null
+# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
+# RUN: llc -mtriple=x86_64-linux-gnu -run-pass=instruction-select -verify-machineinstrs %s -o - | FileCheck %s --check-prefixes=CHECK
+
+--- |
+
+ define i32 @test(i32 %a) {
+ entry:
+ %cmp = trunc i32 %a to i1
+ br i1 %cmp, label %true, label %false
+
+ true: ; preds = %entry
+ ret i32 0
+
+ false: ; preds = %entry
+ ret i32 1
+ }
+
+...
+---
+name: test
+alignment: 16
+legalized: true
+regBankSelected: true
+registers:
+ - { id: 0, class: gpr, preferred-register: '' }
+ - { id: 1, class: gpr, preferred-register: '' }
+ - { id: 2, class: gpr, preferred-register: '' }
+ - { id: 3, class: gpr, preferred-register: '' }
+body: |
+ ; CHECK-LABEL: name: test
+ ; CHECK: bb.0.entry:
+ ; CHECK: successors: %bb.1(0x40000000), %bb.2(0x40000000)
+ ; CHECK: [[COPY:%[0-9]+]]:gr32 = COPY $edi
+ ; CHECK: [[MOV32r0_:%[0-9]+]]:gr32 = MOV32r0 implicit-def $eflags
+ ; CHECK: [[MOV32ri:%[0-9]+]]:gr32 = MOV32ri 1
+ ; CHECK: [[COPY1:%[0-9]+]]:gr8 = COPY [[COPY]].sub_8bit
+ ; CHECK: TEST8ri [[COPY1]], 1, implicit-def $eflags
+ ; CHECK: JCC_1 %bb.1, 5, implicit $eflags
+ ; CHECK: JMP_1 %bb.2
+ ; CHECK: bb.1.true:
+ ; CHECK: $eax = COPY [[MOV32r0_]]
+ ; CHECK: RET 0, implicit $eax
+ ; CHECK: bb.2.false:
+ ; CHECK: $eax = COPY [[MOV32ri]]
+ ; CHECK: RET 0, implicit $eax
+ bb.1.entry:
+ successors: %bb.2(0x40000000), %bb.3(0x40000000)
+ liveins: $edi
+
+ %0(s32) = COPY $edi
+ %2(s32) = G_CONSTANT i32 0
+ %3(s32) = G_CONSTANT i32 1
+ %1(s1) = G_TRUNC %0(s32)
+ G_BRCOND %1(s1), %bb.2
+ G_BR %bb.3
+
+ bb.2.true:
+ $eax = COPY %2(s32)
+ RET 0, implicit $eax
+
+ bb.3.false:
+ $eax = COPY %3(s32)
+ RET 0, implicit $eax
+
+...