| ; RUN: llc -march=mips -mcpu=mips32 -O0 -relocation-model=pic -mips-tail-calls=1 < %s | FileCheck \ |
| ; RUN: %s -check-prefix=MIPS32 |
| ; RUN: llc -march=mips64 -mcpu=mips64 -O0 -relocation-model=pic -target-abi n64 \ |
| ; RUN: -mips-tail-calls=1 < %s | FileCheck %s -check-prefix=MIPS64 |
| ; RUN: llc -march=mips64 -mcpu=mips64 -O0 -relocation-model=pic -target-abi n32 \ |
| ; RUN: -mips-tail-calls=1 < %s | FileCheck %s -check-prefix=MIPS64 |
| |
| |
| ; LLVM PR/30197 |
| ; Test that the scheduler does not order loads and stores of arguments that |
| ; are passed on the stack such that the arguments of the caller are clobbered |
| ; too early. |
| |
| ; This test is more fragile than I'd like. The -NEXT directives enforce an |
| ; assumption that any GOT related instructions will not appear between the |
| ; loads and stores. |
| |
| ; O32 case: The last two arguments should appear at 16(sp), 20(sp). The order |
| ; of the loads doesn't matter, but they have to become before the |
| ; stores |
| define internal i32 @func2(i32 %a, i32 %b, i32 %c, i32 %d, i32 %e, i32 %f) { |
| %1 = add i32 %a, %b |
| %2 = add i32 %1, %c |
| %3 = add i32 %2, %d |
| %4 = add i32 %3, %e |
| %5 = add i32 %4, %f |
| ret i32 %5 |
| } |
| |
| define i32 @func1(i32 %a, i32 %b, i32 %c, i32 %d, i32 %e, i32 %f){ |
| ; MIPS32-LABEL: func1: |
| |
| ; MIPS32: lw ${{[0-9]+}}, {{[0-9]+}}($sp) |
| ; MIPS32-NEXT: lw ${{[0-9]+}}, {{[0-9]+}}($sp) |
| ; MIPS32-NEXT: sw ${{[0-9]+}}, {{[0-9]+}}($sp) |
| ; MIPS32-NEXT: sw ${{[0-9]+}}, {{[0-9]+}}($sp) |
| %retval = tail call i32 @func2(i32 %a, i32 %f, i32 %c, i32 %d, i32 %e, i32 %b) |
| |
| ret i32 %retval |
| } |
| |
| ; N64, N32 cases: N64 and N32 both pass 8 arguments in registers. The order |
| ; of the loads doesn't matter, but they have to become before the |
| ; stores |
| |
| define internal i64 @func4(i64 %a, i64 %b, i64 %c, i64 %d, i64 %e, |
| i64 %f, i64 %g, i64 %h, i64 %i, i64 %j) { |
| %1 = add i64 %a, %b |
| %2 = add i64 %1, %c |
| %3 = add i64 %2, %d |
| %4 = add i64 %3, %e |
| %5 = add i64 %4, %f |
| %6 = add i64 %1, %g |
| %7 = add i64 %2, %h |
| %8 = add i64 %3, %i |
| %9 = add i64 %4, %j |
| ret i64 %5 |
| } |
| define i64 @func3(i64 %a, i64 %b, i64 %c, i64 %d, |
| i64 %e, i64 %f, i64 %g, i64 %h, |
| i64 %i, i64 %j){ |
| ; MIPS64-LABEL: func3: |
| |
| ; MIPS64: ld ${{[0-9]+}}, {{[0-9]+}}($sp) |
| ; MIPS64-NEXT: ld ${{[0-9]+}}, {{[0-9]+}}($sp) |
| ; MIPS64-NEXT: sd ${{[0-9]+}}, {{[0-9]+}}($sp) |
| ; MIPS64-NEXT: sd ${{[0-9]+}}, {{[0-9]+}}($sp) |
| %retval = tail call i64 @func4(i64 %a, i64 %j, i64 %c, i64 %d, i64 %e, i64 %f, i64 %g, i64 %h, i64 %i, i64 %b) |
| |
| ret i64 %retval |
| } |